Chemical Name :Phenolphthalein
CAS: 77-09-8
Molecular Formula: C20H14O4
Molecular Weight：318.32
Phenolphthalein CAS 77-09-8
| Item | Specifications |
| Outer aspect | White powder |
| Identification | Positive |
| Color of solution | A≤0.150 |
| Acidity or alkalinity | Pass |
| Melting temperature | ≥260℃ |
| Heavy metals | ≤10ppm |
| Arsenic | ≤8ppm |
| Chlorides | ≤100ppm |
| Sulphates | ≤200ppm |
| Loss on drying | ≤0.5% |
| Sulphated ash (Residue on ignition) | ≤0.1% |
| Limit of fluoran | Pass |
| Related substance | ≤0.5% |
| Chromatographic impurities | ≤1.0% |
| Organic volatile impurity | Pass |
| Assay | 98.0%-101.0% |
This product is a commonly used acid indicator with a color change range of pH 8.2 (colorless) -10.0 (red). Non-aqueous titration indicator, chromatographic analysis reagent
Phenolphthalein is also a medicine, as a laxative, it acts on the colon and is used to treat constipation.
25kg/drum or as customer requirement
